Temperature-booster for hot-water heating systems.



Patented Jan. 23; 1917.

WILBERT EDGAR CLARK, OF TORONTO, ONTARIO, CANADA.

TEMPERATURE-BOOSTER FOR HOT-WATER HEATING SYSTEMS.

Specification of Letters Patent.

Patented Jan. 23, 1917.

Application filed December 20, 1915. Serial No. 67,805.

To all whom it may concern:

Be it known that I, VVILBERT EDGAR CLARK, a subject of the King of GreatBritain, and resident of 28 Adelaide street, West, in the city ofToronto, Province of Ontario, Dominion of Canada, have invented certainnew and useful Improvements in Temperature-Boosters for Hot-VVaterHeating Sys toms, of which the following is a specification.

This invention relates to a temperature booster for hot water heatingsystems, and the objects of the invention are to increase thetemperature and circulation of the water in the system, and it consistsessentially of a chamber having two passageways, one controlled by aweighted valve and one controlled by a by-pass valve, all as hereinaftermore fully set forth and described in the accompanying specification anddrawing.

The drawings show a vertical section through an embodiment of theinvention.

Referring to the drawing, A represents a casing comprising a cylindricalvertically extending portion 10, a bottom outlet 11 and a side outlet12. The top of the cylindrical portion 10 is closed by a removable cover13 having screw threaded engagement therewith.

The chamber is formed with two passageways or ports, one passageway orport 14 being controlled by the weighted valve B and the otherpassageway or port 15 being controlled by the by-pass valve C.

The weighted valve 13 is conveniently mounted on a rod 16 extending atone end through a guideway 17 which forms part of the bushing 18 aroundthe port 14 and at the other end extending into a guide socket 19 on thecover 13.

The by-pass valve C is mounted in a removable cage D which fits into acylindrical recess 20, the gate being formed with a bypass passageway 21which connects the port 15 with the removable pan shaped seat 22 whichis held in position by the screw threaded plug 23 which when removedpermits access to the cage and valve, said plug having screw threadedengagement with the sides of an opening 24 of the by-pass chamber 25.

The combined by-pass passageways in the valve C form a continuous one ofsubstantially L-shape.

The valve G is gravity seated on a removable tapered seat 26. This seat26 has screw threaded engagement with the walls of an aperture 27 formedabove the pan shaped seat 22 and the valve G is formed with a guide stem28 adapted to fit a guide recess 29 in the upper part of the cage D. Tokeep the cage D from turning, pins 30 may be provided on the upper partthereof adapted to fit recesses 31 in the casing 10.

To insure close contact of the valve B with the bushing or valve seat 18a nose or tip 35 of brass or the like may be formed thereon, said tipbeing firmly attached to the body portion of the weighted valve by meansof an anchored member 36 having diverging wings which extend into thebody portion 37. This body portion is conveniently formed of readilycast material, such as lead, so that its weight may be adjusted to suitthe system in which it is to be used.

In hot water heating systems the device is attached to the pipe linewhich leads to the expansion tank either at the boiler or a point nearthe expansion tank but below it. When the water in the system is heatedby the furnace in the usual way it expands and rises to the booster. Theby-pass valve C is seated and the water has no'ineans of escape to theexpansion tank until it reaches a pressure, due to expansion from theincreased temperature, suflicient to raise or lift the weighted valve Bwhen the surplus water escapes through the valve seat 18 and outlet neck12 into the expansion tank. When enough water has been released so thatthe weighted valve B just equals the pressure in the sys tom the saidvalve falls and seats itself. lVhen the water again falls in temperaturethe pressure is lowered and the water from the tank flows through theby-pass valve C and forces it up and then flows unrestricted back to theboiler. The amount of weight in the valve 13 may be regulated to suitthe amount of radiation in the system and owing to the cup shape of thevalve the amount of weight may be readily adjusted.

The clean out plug 23 permits any oil or sediment in the system whichtends to gum the valve or mechanism to be readily removed.

It will be seen that the by-pass valve C is self contained and can bereadily removed from the device by removing the plug 23. This valve (1,it will be seen, has a closely fitting tapered brass seat and isabsolutely tight, even against air, although it releases very readilyunder the pressure of the returning water.

As many changes could be made in the above construction and manyapparently widely diflerent embodiments of my invention, within thescope of the claims, constructed without departing from the spirit orscope thereof, it is intended that all matter contained in theaccompanying specification and drawings shall be interpreted asillustrative and not in a limiting sense.

lVhat I claim as my invention is:

1. A temperature booster for hot water heating systems comprising acylindrical. portion having a bottom outlet neckand a side outlet neck,a main passageway between the outlet necks and a by-pass passagewaybetween said outlet necks, a weighted valve controlling the mainpassageway, a removable cage member mounted in the by-pass passagewayhaving a passageway therethrough, a cup shaped seat communicating withthe bottom of the last mentioned passageway, said combined by-passpassageway forming one of L shape, a removable plug holding the seat and:age member in position, a valve mounted in the cage member and aremovable seat for the valve, substantially as described.

2. A temperature booster of the character described comprising, incombination, a valve casing provided with an outlet passageway formedwith a valve seat and a separate by-pass passageway for back How, saidby=pass passageway being formed with an enlargement opposite an openingformed in the casing, a weighted valve gravity seated on the valve seatin the outlet passageway, a cage member fitting to the enlargement inthe by-pass passageway and being itself formed with two passageways, oneof which has a tapered valve seat thereon, a tapered valve fitting theseat and reciprocably held in position thereon, a plug closing theopening in the casing, and a removable member co-acting therewith formedwith a recess adapted to connect the two passageways in.

the cage member, as and for the purpose specified.

3. A temperature booster of the character described comprising, incombination, a valve casing provided with an outlet passageway formedwith a valve seat and a separate by-pass passageway for back flow, saidby-pass passageway being formed with an enlargement opposite an openingformed in the casing, a weighted valve gravlty seated on the valve seatin the outlet passageway, a

cage member formed with two passageways, a valve seat removably mountedin one passageway and havin screw threaded engagement with the wallthereof, a valve adapt ed to fit the seat, a plug closing the opening inthe casing, and a removable member 00- acting therewith formed with arecess which affords communication between the two passageways and thecage member.

4s. A temperature booster of the character described comprising, incombination, a valve casing provided .with an outlet passageway formedwith a valve seat and a separate by-pass passageway for back flow, saidby-pass passageway being formed with an enlargement opposite an openingformed in the casing, a weighted valve gravity seated on the valve seatin the outlet passageway, a cage member fitting to the enlargement andbeing formed with two passageways, one of which has a valve seat thereonand being also formed with a guide recess opposite the valve seat, avalve adapted to fit thevalve seat and having a projection adapted toextend into the recess, a plug adapted to close the opening in thecasing, and a removable member co-acting therewith having a recesswhich. affords co1nmunication between the two passageways and the cagemember.

5. A temperature booster of the character described comprising, incombination, a valve casing provided with an outlet passageway formedwith a valve seat and a separate by-pass passageway for back flow, saidby-pass passageway being formed with an enlargement opposite an openingformed in the casing, a weighted valve gravity seated on the valve seatin the outlet passageway, a substantially cylindrical shaped cage memberfitting to the enlargement, being formed with one passageway extendingend to end 01 the same, and being formed with another passagewayextending from the under side and opening at one side, a valve seatremovably mounted in said last mentioned'passageway, a valve fitted tothe seat, a plug member closing the opening in the casing, and aremovable member co-acting therewith affording communication between thetwo passageways in the casing.

(3. A temperature booster of the character described comprising, incombination a valve casing provided with an outlet passageway formedwith a valve seat and a separate bypass passageway tor back flow, saidby-pass passageway being formed with an enlargement opposite an openingformed in the easing, a weighted valve gravity seated in the valve seatin the outlet passageway, a cage member fitting to the enlargement andbeing 1,21s,es0

formed with a passageway having a valve In Witness whereof I havehereunto set seat thereon, av valve reciprocably held 111 my hand in thepresence of two Witnesses.

position on said valve seat, a plug closing VVILBERT EDGAR CLARK. theopening in the casing and holding the Witnesses:

5 cage member in position and a removable R. S. SMART, member co-actingwith the plug. P. GARROW.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

